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Example: Very late answer to a question regarding 18.10
Yes, it isn't really an answer, but I wished to know, how it is generally regulated? Whatever the quality of the answer is.
Do nothing. As long as it seems like a suitable answer we leave it alone.
This said, if the post is spammy, not related, or similar then we address it. Otherwise, we leave the questions be - no need to touch something that's not really 'broken'.